<!DOCTYPE html>
<div style="columns:2; column-fill:auto; height:100px;">
    <div>
        <div>
            <div id="spanner" style="column-span:all;"></div>
        </div>
    </div>
</div>
<script src="../../../resources/testharness.js"></script>
<script src="../../../resources/testharnessreport.js"></script>
<script>
test(() => {
    document.documentElement.offsetTop;
    document.getElementById('spanner').style.display = 'none';
}, "No crash or assertion failure.");
</script>
